KROHNE BM 90 EN - Manual (Page 8)

8
2.1.3. Transducer Cable Extensions for BM90 / L
Transducer cables may be extended using junction boxes as shown below in Figure 3:
Junction
Screen - Term 19
Standard Transducer
Transceiver
Core - Term 20
Transducer
Black
Screen
Blue
RG62AU
Temperature Compensation Transducer
RG62AU
Blue
Junction
Core - Term.22
Screen - Term.19
Core - Term. 20
Screen - Term.19
Transceiver Transducer
Black
Screen
Figure 4:Transducer Wiring for Differential Mode
UP & DOWNSTREAM SHIELD
Junction
Screen - Term 19
Transceiver
Core - Term 18
Upstream Transducer
Black
Screen
Blue
RG62AU
Junction
Screen - Term 21
Transceiver
Core - Term 16
Downstream Transducer
Black
Screen
Blue
RG62AU
Extend transducer cable if necessary
with RG62AU as shown.
1 2 3
E N L
L2 L1
AC POWER
110/230 VAC
+10%/-10%
50/60 HZ 12VA
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
RELAY 1 RELAY 3 RELAY 2
27 28
+ -
DC POWER
21.6-30VDC
9W
19 20 21 22 23 24 25 26
ISOLATED
ANALOG
OUTPUT
-
SH
IE
LD
HOT
.B
LU
E
BL
AC
K
+
TEMP
SENSOR
TRANS-
DUCER
SH
IE
LD
RELAY 4 RELAY 5
LINK
UPSTREAM - BLUE
DOWNSTREAM - BLUE
UP & DOWNSTREAM BLACK